Ok so if I only store bryce scenes, mp3's and jpgs and such then I wouldn't need to reformat the d drive, and I tend to save freeware programs to cd's so hopefully I could reformat and reload anything I wipe. Theoretically anyhow. We still haven't figured out whats causing my PC problems. Sent the processor back and they seemed to think nothing was wrong with it. So after 3 motherboards, trying all the other components in another pc (all worked fine) and now being told its not the processor, I have no idea what the problem is with my PC. :(